System.Data.OracleClient.dll方式操作oracle数据库

System.Data.OracleClient.dll方式操作oracle数据库

一.查询语句：

 using (OracleConnection conn = new OracleConnection(System.Configuration.ConfigurationManager.ConnectionStrings["local_Orcl"].ConnectionString))

            {

                conn.Open();

                using (OracleCommand cmd = conn.CreateCommand())

                {

                    try

                    {

                        cmd.CommandText = "select * from HLB_HIS_REQUISITION";

                        DataTable dt = null;

                        OracleDataAdapter adapter = new OracleDataAdapter();

                        adapter.SelectCommand = cmd;

                        dt = new DataTable();

                        adapter.Fill(dt);

                        cmd.Parameters.Clear();

                        dataGridView1.DataSource = dt;

                    }

                    catch (Exception ee)

                    {

                        MessageBox.Show(ee.Message.ToString() + "\r\n" + ee.StackTrace.ToString());

                        cmd.Dispose();

                        conn.Close();

                        conn.Dispose();

                    }

                }

            }

二.插入语句：

 using (OracleConnection conn = new OracleConnection(System.Configuration.ConfigurationManager.ConnectionStrings["local_Orcl"].ConnectionString))

            {

                conn.Open();

                using (OracleCommand cmd = conn.CreateCommand())

                {

                    try

                    {

                        cmd.CommandText = "insert into hlb_his_requisition(requisition_id, patient_name, patient_sex, patient_age, patient_bed, charge_name, sample_class, requisition_state)values(1,'张三', 1, 1, 1, 1, 1, 1)";

                        cmd.ExecuteNonQuery();

                    }

                    catch (Exception ee)

                    {

                        MessageBox.Show(ee.Message.ToString() + "\r\n" + ee.StackTrace.ToString());

                        cmd.Dispose();

                        conn.Close();

                        conn.Dispose();

                    }

                }

            }

三.连接字符串：

<add name="local_Orcl" connectionString="Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.31.11)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=ORCL)));User ID=scott;Password=123"/>

四.是否乱码：

五.是否需要安装客户端：

巴特西

System.Data.OracleClient.dll方式操作oracle数据库

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